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authorSteve French <sfrench@us.ibm.com>2009-02-21 21:17:43 +0000
committerSteve French <sfrench@us.ibm.com>2009-03-12 01:36:20 +0000
commitb298f223559e0205244f553ceef8c7df3674da74 (patch)
treea65cb2f64d1b999b7b573857a8b33bbb83ff97af /fs/cifs/cifsglob.h
parentebdcc81c71937b30e09110c02a1e8a21fa770b6f (diff)
[CIFS] Send SMB flush in cifs_fsync
In contrast to the now-obsolete smbfs, cifs does not send SMB_COM_FLUSH in response to an explicit fsync(2) to guarantee that all volatile data is written to stable storage on the server side, provided the server honors the request (which, to my knowledge, is true for Windows and Samba with 'strict sync' enabled). This patch modifies the cifs_fsync implementation to restore the fsync-behavior of smbfs by triggering SMB_COM_FLUSH after sending outstanding data on the client side to the server. Signed-off-by: Horst Reiterer <horst.reiterer@gmail.com> Acked-by: Jeff Layton <jlayton@redhat.com> Signed-off-by: Steve French <sfrench@us.ibm.com>
Diffstat (limited to 'fs/cifs/cifsglob.h')
-rw-r--r--fs/cifs/cifsglob.h1
1 files changed, 1 insertions, 0 deletions
diff --git a/fs/cifs/cifsglob.h b/fs/cifs/cifsglob.h
index e004f6db5fc..44ff94d37e1 100644
--- a/fs/cifs/cifsglob.h
+++ b/fs/cifs/cifsglob.h
@@ -254,6 +254,7 @@ struct cifsTconInfo {
atomic_t num_smbs_sent;
atomic_t num_writes;
atomic_t num_reads;
+ atomic_t num_flushes;
atomic_t num_oplock_brks;
atomic_t num_opens;
atomic_t num_closes;